What is the primary way antibiotic particles get into the agar in the Kirby-Bauer test?       

This is a greatly enlarged image of some colonies on blood agar.  What does the clear / non-red area mean (around each colony)?  

Which ingredient(s) in mannitol salt agar would NOT provide sources of carbon? HINT make sure to read all answer choices!

A chemical germicidal solution needs to be sufficient to prevent microbial growth at least  _____ % of the time to meet the required standards to be considered a usable dilution of that germicide for a specific application, according to the Association of Official Analytical Chemists, and to pass registration with such a criteria by the FDA or EPA.

In the standard plate count lab, what does CFU stand for?

Examine the below picture, and choose the most accurate answer choice based on the picture.      

Which ingredient(s) in mannitol salt agar (or most media, actually) would provide a source of nitrogen?

Enterotube II conducts several biochemical tests on the same organism, using _____ compartments.

In the coagulase slide test, what is the purpose of the drops of saline?

What would MOST likely happen if you did not add enough sodium chloride to mannitol salt agar?